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cpr: relax blockdev migration blockers

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Some blockdevs block migration because they do not support sharing across
hosts and/or do not support dirty bitmaps.  These prohibitions do not apply
if the old and new qemu processes do not run concurrently, and if new qemu
starts on the same host as old, which is the case for cpr.  Narrow the scope
of these blockers so they only apply to normal mode.  They will not block
cpr modes when they are added in subsequent patches.

No functional change until a new mode is added.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <1698263069-406971-4-git-send-email-steven.sistare@oracle.com>
This commit is contained in:
Steve Sistare 2023-10-25 12:44:26 -07:00 • committed by Juan Quintela
parent fa3673e497
commit e0ee3a8ff7
7 changed files with 7 additions and 7 deletions
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2
block/vvfat.c
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@ -1268,7 +1268,7 @@ static int vvfat_open(BlockDriverState *bs, QDict *options, int flags,
"The vvfat (rw) format used by node '%s' "
"does not support live migration",
bdrv_get_device_or_node_name(bs));
ret = migrate_add_blocker(&s->migration_blocker, errp);
ret = migrate_add_blocker_normal(&s->migration_blocker, errp);
if (ret < 0) {
goto fail;
}